<?php
$a = 1;
$b = "hello";
$c = true;

var_dump($b);

$arr = ["a", "b", "c"];
echo $arr[0];
echo "<br><pre>";
var_dump($arr);

echo "<hr><h1>关联数组</h1>";
$keyArray = [
    "user" => "lgh",
    "passwrod" => "123456"
];
var_dump($keyArray);

echo phpinfo();